If you want to know if someone is "real" tell them an obvious lie. A human will recognize it for what it is immediately, a cursed will not. They may look real, but they are not. Only real eyes realize real lies.
At first, you are sad at the student having no answers. then you are rooting for the student. then, at the end, you learn the student was Einstein. Einstein was not the best example of a CHristian, so it alsmost numbs the victory.